Rolling-mill repeater



A. J. TOWNSEND.

ROLLING MILL REPEATER.

I; APPLiCATION FILED MAY 71 19I8. u 1,43,,b52l. Patentea June 15, 192% 4 SHtET.S-SHEE1 I.

A. J. TOWNSEND.

ROLLING MILL REPEATER.

APPLICATION FILED MAY7,1918- E E43 EQQ PatenteMune 15,1920,

4 SHEETS-SHEET 2.

A. J. TOWNSEND.

ROLLING MILL REPEATER.

APPLICATION, FILED MAY 7, 1918.

1,343,652. Pfltflllted June 15, 1920.

4 SHEETS-SHEET 4-.

ARTHUR J.-TOWNSEND, OF CANTON, OHIO.

ROLLING-MILL REPEATER.

Specification of Letters Patent. Patentgd J 15 1920 Application filed May 7, 1918. Serial No. 233,02.

To all whom it m ay concern:

Be it known that I, ARTHUR J. TowN- saxn, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio. have invented certain new and useful Improvements in Rolling-Mill Repeaters, of which the following is a specification.

The invention relates to repeating mechaa buckling from the first pass and will facilitate the process of finishing the strips so that the same can be accomplished without a reheating thereof.

The objects of the invention thus outlined in general terms, and ancillary advantages, are attained by the embodiment thereof illustrated in the accompanying drawings forming part hereof, in which- Figure l is a longitudinal elevation section of a duo mill and the repeater;

Fig. 2, Fig. 3, a plan view of the repeater; and Fig. 1, a transverse section of the repeater ""fiin line Figs- 2 and Similar numerals referto similar parts throughout the drawings.

The ordinary duo mill 1, shown in Fig. l of the drawings, is located at the delivery end of a roller chute or table 2 which carries the long strips or lates from a roughing mill or universal ro is, not shown, which reduce the strips from heated slabs in the usual manner.

The lower rolls 3 of the duo mill usually make the first or forward pass and the upper rolls 4 usually make the second or return pass, from which upper rolls the strips are returned to the chute or table 2 whence they are delivered by a lateral transfer to another roller table which carries the strips forward again to a bull head or final finishing mill not shown, which may be and preferably is located alongside the due mill. Suitable guideways 5, 5, 6 and 6 are pro vided for carrying the strips respectireiy a side elevation of the repeater;

from the table 2 to the rolls 3, and returning the strips from the rolls 4 to the table 2. The repeater 7 is located some fifteen feet 1n rear of the mill and is composed of suitable hous1ngs'8 carrying journal bearings for the shaft 9 for the main drum 10 for the shaft 11 for the sprocket wheels 12 located directly above the drum, for the shaft 13 for the pulley wheels 14 located below the forward side of the drum, and for the shaft 15 for the pulley drum 16 located a substantial distance in rear of the main drum.

The drums l0 and 16 are preferably pro vided with peripheral flanges 17 and 18 on each edge, between which flanges the width of the face of the drum exceeds the. greatest width of strips to be operated upon; and a suilicient number of sprocket wheels 12 and pulley wheels 14 are located side by side, to substantially correspond to the width of the drums.

A series of laterally adjacent sprocket chains 19 are mounted around the rear sides of the drums l0 and 16 and around the forward sides of the wheels 12 and 14, as shown in Figs. 1 and 2, and the arrangement of the'parts and the suspended weight of the belt formed by these chains between the wheels and the pulley drum cause the half to press in a clamping embrace around substantially the entire rear half of the main drum.

A pulley wheel 20 is provided on the sprocket wheel shaft' 11 and power from a suitablesource as the motor 21 is transmitted thereto by a belt 22, by means of which the repeater is preferably operated independently of the mill, although it may be eared thereto if desired.

@uide ways 23, 23 23 and 23 are prothe s eed of the repeater is so related to the spec of the mill that the chains passing around the main drum will travel slightly faster than the periphery of the lower rolls of the mill. By means of this diiferential speed, the action of the repeater carries the strip in tension. from the iower rolls to the through the lower rolls 3 of the mill, they are directed b the corresponding guideways into the 'ower nip of the main drum and chains, the operation of which carries the advancing end of the strip upward and forward over the top of the drum'whence the strip is directed by the upper guideways, head first into the nip of the upper rolls 4 of the mill, the peripheral speed of which does not exceed and may be slightly slower than that of the lower rolls, and such fullness as there may be in the length of the strip occurs between the repeater and the return rolls, where the same is negligible.

It will be understood that the chains of the lateral series 19 are spaced closely together and cover substantially the entire width of the face of the main drum, so that strips of varying widths can be handled by the repeater, and in all cases, the entire width of the strip is subject to the embracing and gripping action of the chains upon the drum, which action extends around nearly the entire rear half of the drum. The repeater naeaeea thus described is specially well adapted ts handle strips running from 80 to 90 feet in length and return them for the second pass through the duo mill so as to be transferred and finished in the bull head mill by the single initial heat of the ingot; thus completely finishing the strips without a reheat and also by apparatus of less length than otherwise required.

1. The combination of a double stand of rolls, a repeater mechanism in rear of the rolls, guideways between the respective rolls and the repeater mechanism, and means for operating the repeater mechanism slightly faster than the lower rolls to carry sheet strips in tension from said lower rolls.

2. A rolling mill repeater comprising a drum having peripheral flanges on its ends,

.a sprocket wheel above, a pulley wheel below and a pulley drum in rear of the drum, and endless chains operating on the sprocket and pulley wheels in clamping embrace around the rear side of the drum.

3. A rolling mill repeater, comprising a rotatable drum, a sprocket wheel above, a pulley wheel below and a ulley drum in rear of the drum, endless ciiains operating on the sprocket and pulley wheels in clampilng embrace around the rear side of the rum.

ARTHUR J, TOWNSEND. 

